2020-10-14

Posted 2022-12-07 自由乐土

简单的计算几个数的阶乘之和，主要为了锻炼for语句的使用。
#include <stdio.h>
#include<Windows.h>
#pragma warning(disable:4996)
int Fact(int a)
int sum=1;
for (int i=a; i >= 1; i–)
sum *= i;

return sum;

int FactSum(start, end)
int total = 0;
for (int i = end; i >= start; i–)
total += Fact(i);

return total;

int main()

int start = 0;
int end = 0;
int total = 0;
printf(“请输入开始的数字和结束的数字\\n”);
scanf("%d %d", &start, &end);
total = FactSum(start, end);
printf("%d", total);
system(“pause”);
return 0;